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ADV7393 for NTSC 525I

Question asked by myad_device on Oct 21, 2014
Latest reply on Oct 21, 2014 by DaveD



I'm trying to convert a digital camera chip to NTSC 525I using the ADV7393.

I can set the camera to output interlaced at 60Hz field, and 30Hz frame rate.

The problem is that the camera is limited to 480 lines, yet NTSC requires 525 lines.


Can the ADV7393 create blank lines to meet the standard?

I'm wondering, for example, if I were able to extend the Frame Valid (Vertical Synch) pulse beyond where the camera chips last actual line was output, if the ADV7393 will create blank lines?


Otherwise, what is the best way to deal with this problem?